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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 598

post #5971 of 67363
Quote:
Originally Posted by CrazyLefty View Post

So over the weekend I put in a new Thermaltake Extreme 2.0, and to make sure I got the most out of it to cool my 8350, I lapped the copper heatsink on the block and lapped the heatspreader on the CPU.
Both came out nicely, but I think I want to go back over the CPU, after five hours I just wanted to be done sanding!
Here's the CPU, I used a piece of dense Styrofoam to hold the cpu from the pin side, and used a mirror that I picked up at an auto parts store.

I started with 1000 grit sand paper, but it wasn't doing the job fast enough. So i moved down to 400, then up to 600, and from then used 1000, 1500, and stopped at 2000. I found 3000 grip paper, but its more like a clay sponge, but definitely did a nice finish on the heatsink (the first item I did, so I had the energy)
Here's the finish

It idles at 5016MHz at 23 degrees, and even in silent mode doesn't get to more than 56 degrees at 100% load at just under 5GHz.
Would post pics of the water block as well but not sure if this is the right forum for that.

That sanding of the copper is supposed to aid heat dissipation?? You obviously will never be able to resell that cpu after sanding off the serial number, batch etc. But I assume performance is more important to you. By the way is Crazy Lefty an indication you are Left handed or very Left politically?
Edited by os2wiz - 12/20/12 at 2:41pm
post #5972 of 67363
Got a new 8350 and the batch number I got is 1244PGT (From newegg) poped it in and at stock clocks turbo off it has 1.325cpu vcore, its the lowest I've seen compared to the other 4 that we have tested (most got 1.3750v) now playing with overclocking, 5.1Ghz seems to need 1.525v but testing it with prime95 IBT right now (Since Prime95 seems to have issue's, I don't think it does but whatever LOL.
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post #5973 of 67363
Quote:
Originally Posted by mongoled View Post

Well this CPU isnt going to get 5Ghz stable, lol

BIOS Settings
CPU Voltage:
CPU VDDA: 2.8v
CPU LLC: Extreme
CPU VOCP: Disabled
CPU Voltage Frequency: Auto
CPU PWM Mode: Extreme
CPU NB Voltage: 1.30v
CPU NB LLC: Auto
CPU NB VOCP: Auto
Hugh jump in voltage under load from BIOS setting!
Has anyone else confirmed that the combo of CPU LLC: Extreme + CPU VOCP: Disabled is the cause of this.
I.e. in that DIGI+ estimates this is what is required to keep the CPU stable ??
CPU needs over 1.6v to stay *stable* at 4900mhz.
Another FX-8350 is on the way, hope its better than this one, will find out after the New Year !
Thats 10 runs complete at 4900 mhz max Package temp was 62C....

Your VDDA is way to high. The highest safe setting is 2.695 . You most likely are getting serious side affects at 2.8 GHZ.
post #5974 of 67363
Quote:
Originally Posted by KyadCK View Post

His temps are fine.
Also, every CPU is different, just because you can hold an FSB of 250 doesn't mean he can. FSB deadzones are something each person has to find on their own.[/quote

Yes I found that out when my friend did fsb 277 with 17 multiplier and I could not do anything in the 270's at that multiplier or any other.
post #5975 of 67363
tried an 8320 today. the vid was 1.3375, It was stable with prime at 1.4375, and I couldn't get it stable any higher with increases in voltage. stuck the 8350 back in. both my 8350 + 8320 are 1242. best I can do with the 8350 is 4.5 at 1.44 loaded vcore, prime stable for 35+ hours. I cant get prime stability over that without massive voltage increases, and I do not have the extra cooling for that. this is the first chip ive had that ive been completely and utterly limited by cooling, since year 2000.
post #5976 of 67363
Thread Starter 
Quote:
Originally Posted by os2wiz View Post

That sanding of the copper is supposed to aid heat dissipation?? You obviously will never be able to resell that cpu after sanding off the serial number, batch etc. But I assume performance is more important to you. By the way is Crazy Lefty an indication you are Left handed or very Left politically?

It's called lapping. Lapping a CPU does 2 things.

1: Makes the surface of the CPU perfectly flat.
2: gets rid of the nickle for direct copper contact.

Both of those are good for temps, and don't underestimate OCN, I've seen lapped CPUs sell in the marketplace.
Quote:
Originally Posted by Veedo View Post

tried an 8320 today. the vid was 1.3375, It was stable with prime at 1.4375, and I couldn't get it stable any higher with increases in voltage. stuck the 8350 back in. both my 8350 + 8320 are 1242. best I can do with the 8350 is 4.5 at 1.44 loaded vcore, prime stable for 35+ hours. I cant get prime stability over that without massive voltage increases, and I do not have the extra cooling for that. this is the first chip ive had that ive been completely and utterly limited by cooling, since year 2000.

Ignore Prime, use IBT, OCCT, Overdrive, and other tools. Your life will be easier.
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post #5977 of 67363
Quote:
Originally Posted by KyadCK View Post


Ignore Prime, use IBT, OCCT, Overdrive, and other tools. Your life will be easier.

i am on the prime95 stability side of the fence. if i settled for non prime, i think 4.7-4.9 is not out of the question.
post #5978 of 67363
Just throwing this out there, but is there anyone with a Asus board and that Samsung wonder ram? I can't seem to OC mine, at all. I have risen (and lowered) volts, played with all the timings, and I either get a no post at all, or near instant error from OCCT. I have ran memtest and I let it do 2 passes successfully (took bloody forever), but am not sure I did the right tests or setup. I just let it start and go.

My CPU is @ 4.6Ghz with 1.76 1.476 volts (8 and 2 hours with OCCT/Prime95 stable respectively, haven't had time to let it do a 8+ hour run yet) and I've had my CPU/NB at 1.2, 1.3, and 1.35 trying to get that ram anywhere other then stock. The only settings I have not played with are in the "DRAM Driving Control" and am hoping there is fine tuning there to make the RAM do anything frown.gif

Any insight would be greatly appreciated as I am not happy with 1600 Mhz. Or, could this be a sign of a crappy IMC?
Edited by Darius Silver - 12/20/12 at 5:27pm
 
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post #5979 of 67363
Quote:
Originally Posted by Darius Silver View Post

Just throwing this out there, but is there anyone with a Asus board and that Samsung wonder ram? I can't seem to OC mine, at all. I have risen (and lowered) volts, played with all the timings, and I either get a no post at all, or near instant error from OCCT. I have ran memtest and I let it do 2 passes successfully (took bloody forever), but am not sure I did the right tests or setup. I just let it start and go.
My CPU is @ 4.6Ghz with 1.76 volts (8 and 2 hours with OCCT/Prime95 stable respectively, haven't had time to let it do a 8+ hour run yet) and I've had my CPU/NB at 1.2, 1.3, and 1.35 trying to get that ram anywhere other then stock. The only settings I have not played with are in the "DRAM Driving Control" and am hoping there is fine tuning there to make the RAM do anything frown.gif
Any insight would be greatly appreciated as I am not happy with 1600 Mhz. Or, could this be a sign of a crappy IMC?

i am using 4 sticks of the wonder ram in an asus crosshair v formula z. i have it at 1866 right now, left all settings at auto, and set it to 9-9-9, and 2t. 1.35 volts makes that setup stable, nb volts never seemed to do anything for me yet. 2133 is almost attainable at 11-11-11, but not prime stable for me yet.
post #5980 of 67363
Quote:
Originally Posted by Veedo View Post

i am using 4 sticks of the wonder ram in an asus crosshair v formula z. i have it at 1866 right now, left all settings at auto, and set it to 9-9-9, and 2t. 1.35 volts makes that setup stable, nb volts never seemed to do anything for me yet. 2133 is almost attainable at 11-11-11, but not prime stable for me yet.

Wow... I had the ram set to 1.5 volts trying for 1866 and it's stayed that since for all my other attempts. Dropped the ram to 1.35 and am running OCCT with your settings and no instant crash... This is almost unbelievable...
 
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